Optical projector with on axis hologram and multiple beam splitter
US10317684B1 · kind B1 · utility
2Cited by
2References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 24, 2018 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | Jan 24, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In one embodiment, the light from a single laser is used to illuminate a pattern-generating optical element to generate a pattern. The pattern-generating optical element in various embodiments can be, for example, a holographic diffractive optical element (DOE) or an array of micro-lenses. A multiple beam grating (MBG) duplicates the pattern multiple times to provide a multiple pattern image. A lens is used to project the patterns onto an object. In one embodiment, the lens is located between the pattern-generating optical element and the multiple beam grating (MBG).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.